Measuring attachment for motor vehicle wheels

ABSTRACT

A measuring attachment for motor vehicle wheels which includes a revolution counter and a flexible clamp to clamp the counter to the rotating hub of a motor vehicle wheel. The counter shaft is rigidly secured to the clamp and the counter body is weighted with a pendulum weight to prevent its rotation as the shaft is rotated with the vehicle wheel. A reset knob is provided for resetting the counter when desired.

United StatesPatent n91 Burnett m1 3,7794% [45] Dec. 18, 1973 MEASURKNG ATTACHMENT FOR MOTOR VEHICLE WHEELS Inventor: William W. Burnett, Rt. 1, Box

1275, Lincoln, Calif. 95648 [22] Filed: Mar. 14, 1973 [2]] Appl. No.: 341,088

[52] US. Cl. 235/95, 235/95 B, 235/95 C [51] int. Cl. GOlc [58] Field of Search 235/95 B, 95 C, 95 R,

[56] References Cited UNITED STATES PATENTS 3,174,365 3/1965 Lucarelli 248/231 L903 695 4/1933 Chobert FOREIGN PATENTS OR APPLICATIONS 548,169 4/l932 Germany 235/95 C Primary ExaminerRichard B. Wilkinson Assistant Examiner-Pat Salce AttorneyAlexander B. Blair et 21].

ABSTRACT A measuring attachment for motor vehicle wheels which includes a revolution counter and a flexible clamp to clamp the counter to the rotating hub of a motor vehicle wheel. The counter shaft is rigidly se- Icured to the clamp and the counter body is weighted with a pendulum weight to prevent its rotation as the shaft is rotated with the vehicle wheel. A reset knob is provided for resetting the counter when desired.

' 3 Claims, 4 Drawing Figures PATENTEDUEC 18 5 r/ca 2.

MEASURING ATTACHMENT FOR MOTOR VEHICLE WHEELS BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to counters for counting the revolutions of a vehicle wheel.

2. Summary of the Invention A vehicle wheel revolution counter consists of a flexible clamprigidly secured to the hub of the vehicle to rotate therewith and secured rigidly to the shaft of a counter. The counter body is provided with a pendulum weight suspended therefrom to prevent rotation of the counter as its shaftis rotated by the clamp. A reset knob is provided for resetting the counter to zero when desired.

The primary object of the invention is to provide a counter for counting the revolutions of a motor vehicle wheel so as to measure the distance covered by the motor vehicle. 1

Other objects and advantages will become apparent in the following specification when considered in the light of the attached drawings.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an elevational view of the invention, shown attached to a motor vehicle wheel hub partially broken away for convenience of illustration;

FIG. 2 is a side elevation of the invention attached to the motor vehicle hub;

FIG. 3. is a side elevation of the clamp with the counter removed; and v FIG. 4 is an exploded elevational view of the invention.

DESCRIPTION OF THE PREFERRED EMBODIMENT intersected by a threaded bore 17 adapted to receive a The yoke 14 has its outer end secured to a flexible circular clamp 19 provided with a hand key 20 for tightening and loosening the clamp 19.

A conventional revolution counter 21 has a shaft 2 extending therefrom which is mounted in the bore 16 and rigidly secured therein by the set-screw 18. A knob 23 on the counter 21 permits the counter2l to be reset as desired.

A pendulum weight 24 is mounted on the lower end of the shaft 25 having its upper end secured to the counter 21..The weight of the shaft 24 is sufficient to prevent the rotation of the counter 21 as its shaft 22 is rotated.

In the use and operation of the invention the band 19 is positioned to encompass the hub 13 and the key 20 is tightened so as to rigidly secure the yoke 14 to the hub 13. The shaft 22 is inserted in the bore 16 and the set-screw 18 is tightened thereagainst to rigidly secure the. shaft 22 to the bushing 15. The vehicle is then moved over the area to be measured and each revolution of the wheel 11 will be counted as one by the counter 21. In order to arrive'at an accurate measurement of the distance traversed by the wheel 11 the outer circumference of the tire 12 is measured and multipled by the count of revolutions shown on the counter 21.

Having thus described the preferredembodiment of the invention it should be understood that numerous structural modifications and adaptations may be re sortedto without departing from the spirit of the invention.

What is claimed is:

l. A revolution counting apparatus comprising a flexible clamp for detachable connection to a wheel hub, a revolution counter including a shaft, a weight depending from said counter and means connecting said shaft and said clamp to rotate said shaft upon rotation of said clamp. I

2. A device as claimed in claim 1 wherein the means connecting said clamp and said shaft includes a generally U-shaped yoke having its opposite ends connected to said clamp and a bushing rigidly connected to said yoke and detachably connected to said shaft.

3. A device as claimed in claim 1 wherein a hand actuated key is mounted on said clamp for tightening and loosening said clamp on said hub.

. a m a: 

1. A revolution counting apparatus comprising a flexible clamp for detachable connection to a wheel hub, a revolution counter including a shaft, a weight depending from said counter and means connecting said shaft and said clamp to rotate said shaft upon rotation of said clamp.
 2. A device as claimed in claim 1 wherein the means connecting said clamp and said shaft includes a generally U-shaped yoke having its opposite ends connected to said clamp and a bushing rigidly connected to said yoke and detachably connected to said shaft.
 3. A device as claimed in claim 1 wherein a hand actuated key is mounted on said clamp for tightening and loosening said clamp on said hub. 